Paper Cup Phone (BH-A)

Paper Cup Phone (BH-A)

Making a cup phone is a fun way to learn about the science of sound. Sound waves can travel through air, solids and liquids. When one speaks into the cup, the vibrations are transmitted into the string. They continue to travel through the string as long as it is held taut to the receiving cup.
The little ones of BH-A were thrilled to hear their friend’s voice being whispered in their ear.

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